A hybridized photocatalysis–microfiltration system with iron oxide-coated membranes for the removal of natural organic matter in water treatment: Effects of iron oxide layers and colloids

Yao, Ping; Choo, Kwang‐Ho; Kim, Moon-Hyeon

doi:10.1016/j.watres.2009.06.010

Cited by 56 publications

(23 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…et al, 2015;Son et al, 2012;Yao et al, 2009;Teo *Corresponding author : yson@kumoh.ac.kr Received : 2015. 12.…”

Section: 서 론mentioning

confidence: 99%

The Effect of Liquid Height on Sonochemical Reactions in 74 kHz Sonoreactors

Son¹

2016

Journal of Soil and Groundwater Environment

View full text Add to dashboard Cite

Acoustic cavitation can induce various sonochemical effects including pyrolysis and radical reactions and sonophysical effects including microjets and shockwave. In environmental engineering field, ultrasound technology using sonochemical effects can be useful for the removal and mineralization of recalcitrant trace pollutants in aqueous phase as one of emerging advanced oxidation processes (AOPs). In this study, the effect of liquid height, the distance from the transducer to the water surface, on sonochemical oxidation reactions was investigated using KI dosimetry. As the liquid height/ volume increased (40~400 mm), the cavitation yield steadily increased even though the power density drastically decreased. It was found that the enhancement at higher liquid height conditions was due to the formation of standing wave field, where cavitation events could stably occur and a large amount of oxidizing radicals such as OH radicals could be continuously provided.

show abstract

“…et al, 2015;Son et al, 2012;Yao et al, 2009;Teo *Corresponding author : yson@kumoh.ac.kr Received : 2015. 12.…”

Section: 서 론mentioning

confidence: 99%

The Effect of Liquid Height on Sonochemical Reactions in 74 kHz Sonoreactors

Son¹

2016

Journal of Soil and Groundwater Environment

View full text Add to dashboard Cite

show abstract

“…The combination of AOPs with other treatment technique has been shown to have significant potential to promote higher removal efficiency of NOM (Huang et al 2008;Toor and Mohseni 2007;Uyguner et al 2007). For instance, the combination of AOPs with membrane filtration has been shown by several research group's (Yao et al 2009;Le-Clech et al 2006) to have significant potential mitigating both NOM fouling of membranes and the formation of DBPs. Photo-catalysis process (UV/ TiO 2 ) combined with membrane filtration has been observed to reduce the fouling of membrane through the mineralization of NOM and even by altering the characteristic of NOM, and therefore to improve membrane performance.…”

Section: Future Perspectives and Potential Research Directionsmentioning

confidence: 99%

Chlorine for Water Disinfection: Properties, Applications and Health Effects

Drogui

Daghrir

2015

Environmental Chemistry for a Sustainable World

View full text Add to dashboard Cite

“…Besides what mentioned above, the recirculated mode with inorganic membrane and integrative mode with organic membrane are also investigated by other researchers [43,44]. A photocatalysis-microfiltration (polyethylene hollow fiber membrane) hybrid system, with the coating of a membrane using iron oxide particles (IOPs), was investigated by Yao et al [44], with respect to natural organic matter (NOM) removal and membrane permeability during the treatment of various surface waters.…”

Section: Tio 2 -Suspended Photocatalysis-membrane Separation Technologymentioning

confidence: 99%

“…A photocatalysis-microfiltration (polyethylene hollow fiber membrane) hybrid system, with the coating of a membrane using iron oxide particles (IOPs), was investigated by Yao et al [44], with respect to natural organic matter (NOM) removal and membrane permeability during the treatment of various surface waters.…”

Section: Tio 2 -Suspended Photocatalysis-membrane Separation Technologymentioning

confidence: 99%

Progress of applied research on TiO2 photocatalysis-membrane separation coupling technology in water and wastewater treatments

Xiao

et al. 2010

Chin. Sci. Bull.

View full text Add to dashboard Cite

Photocatalysis-membrane separation coupling technology has been a heavily researched area in water and wastewater treatment during recent years. The membrane separation process allows the photocatalyst to be easily separated, recovered and reused. More significantly, the membrane is efficient to maintain high flux of membranes as the photocatalyst can reduce the membrane fouling problem which is a hindrance in the development of membrane process. Moreover, some synergistic effects can also be produced, and thus the efficiency of water treatment is enhanced greatly. A comprehensive review of photocatalysis-membrane separation coupling technology is conducted with an insight into its configurations, theories involved, characteristics, and factors that influence the coupling technology. In view of the existing problems, the prospects for future development are also proposed. photocatalysis, membrane separation, titanium dioxide, membrane fouling, photocatalytic membrane reactor Citation:Xiao Y T, Xu S S, Li Z H, et al. Progress of applied research on TiO 2 photocatalysis-membrane separation coupling technology in water and wastewater treatments.Photocatalytic oxidation, a new type of water pollution control technology, with the characteristics of high efficiency, low energy consumption and a wide range of application, can oxidize most organic compounds, especially non-biodegradable organic contaminants, by mineralizing them to small inorganic molecules. For this reason, photocatalytic oxidation technology has broad prospects for application. Among various semiconductor photocatalysts, there is a general consensus among researchers that TiO 2 is more superior because of its high activity, large stability to light illumination, and low price [1−4]. In photocatalytic degradation, two modes of TiO 2 application are adopted: (1) TiO 2 immobilized on support materials, and (2) TiO 2 suspended in aqueous medium [5,6]. Application of TiO 2 in suspension instead of immobilizing the TiO 2 on solid carriers has shown an improvement in organic degradation efficiencies due to the uniform distribution and large specific surface area. However, classical solid-liquid separation processes such as sedimentation, centrifugation and coagulation used for separation of the fine TiO 2 particles (typically less than 1 μm), are not effective [7]. In addition to the low reutiliztion rate, there is also a chance of secondary pollution caused by fine TiO 2 particles in the effluent [8]. Therefore, the recovery of the photocatalysts is one of the main concerns that affect its engineering application on a large scale. A lot of investigations have been conducted aiming at solving this problem. For example, the application of titaniacoated magnetic particles could keep the high photocatalytic efficiency of the suspension system, as well as separate and recover TiO 2 particles from the treated water by applying an external magnetic field [9−11]. Nevertheless, during the integration of TiO 2 and magnetic carrier, the photoactivity of TiO 2 may decre...

show abstract

A hybridized photocatalysis–microfiltration system with iron oxide-coated membranes for the removal of natural organic matter in water treatment: Effects of iron oxide layers and colloids

Cited by 56 publications

References 29 publications

The Effect of Liquid Height on Sonochemical Reactions in 74 kHz Sonoreactors

The Effect of Liquid Height on Sonochemical Reactions in 74 kHz Sonoreactors

Chlorine for Water Disinfection: Properties, Applications and Health Effects

Progress of applied research on TiO2 photocatalysis-membrane separation coupling technology in water and wastewater treatments

Contact Info

Product

Resources

About